Extech Instruments CTH10A - Daily Alarm and Snooze Function; Display Modes and Sensor Readings; Important Notes and Precautions

EXTECHINSTRUMENTS
4CTH10A‐en‐GB_V2.310/15
DailyAlarmSetting
 Press“MODE”button(B2)toviewtheAlarmTime,“AL”isshownonthedisplay.
 When viewing the Alarm Time, hold “MODE” button (B2) for 3 seconds to enter the
AlarmTimesettingmode.Press“+”(B3)or“‐”(B4)buttontoadjustthealarmtime.Press
the
“MODE”button(B2)toconfirmthesettingandmovetothenextsetting.
 Press“ALON/OFF”Button(B6)toactivateordeactivatethealarm.Ifthealarmison,the
alarmicon"
"appearsonthedisplay.
SnoozeAlarm
 Press the “SNOOZE” (B1) button when the alarm tone sounds. The alarm snoozes for
approx.5minutes,afterwhichtimeitalertsagain.“
”flashesontheLCDduringthe
snoozetime.Thisprocesscanberepeated7times.
 Except for the“SNOOZE” button,any button can be pressed to stop the snooze alarm.
Otherwise,thealarmsignalsoundsfor2minutes,thenstopsautomatically.
12/24HourDisplayMode
Pressthe“12/24”(B3)button toselectthe12or24hourmode.
ThermometerandRelativeHumidityDisplays
 TheCTH10Aincludesinternaltemperatureandrelativehumiditysensors.Temperature
andrelativehumiditymeasurementsaredisplayedonthelowerrightsideoftheclock.
 Pressthe“°C/°F”(B4)buttontoselectC:CelsiusorF:Fahrenheitunits.
 Ifthetemperatureexceedsthemeasurablerange,LL.L(beyondtheminimum

temperature)orHH.H(beyondthemaximumtemperature)willbeshownontheLCD.
ImportantNotes
 Theclocklosestimeinformationwhenthebatteriesareremoved.
 DonotexposetheClocktodirectsunlight,extremetemperatures,orhighhumidity
 Nevercleanthedeviceusingabrasiveorcorrosivematerialsorproducts. Useadamp
clothtowipethehousingcleanasnecessary.